January weather forecast
Waterbury, CT

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Weather in January

January in Waterbury, Connecticut is typically the coldest month. Low and high temperatures range from 21.4°F to 33.3°F. Winters in Waterbury are marked by gray skies, regular snow showers, and biting winds. With a UV index at the minimum and overcast skies for almost 50% of the time, this month marks the start of an extended getting-cold season in Waterbury. Frequent snowfall adds a layer of white sheen to the town and creates a picture-perfect, although chilly, winter landscape.

Temperature

Temperature records mark January as the coldest month, with highs averaging 33.3°F and lows at 21.4°F.

Humidity

In Waterbury, Connecticut, the average relative humidity in January is 77%.

Rainfall

In January, the rain falls for 7.3 days. Throughout January, 2.36" of precipitation is accumulated. In Waterbury, Connecticut, during the entire year, the rain falls for 158.5 days and collects up to 34.57" of precipitation.

Snowfall

January through May, October through December are months with snowfall in Waterbury, Connecticut. In Waterbury, in January, snow falls for 7.7 days, with typically accumulated 4.13" of snow. Throughout the year, there are 34.9 snowfall days, and 20.35" of snow is accumulated.

Daylight

In Waterbury, the average length of the day in January is 9h and 35min.
On the first day of the month, sunrise is at 7:18 am and sunset at 4:32 pm. On the last day of January, sunrise is at 7:04 am and sunset at 5:06 pm EST.

Sunshine

The average sunshine in January is 4.9h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: In January, the average maximum UV index of 2 translates into the following recommendations:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
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FAQ

What part of the year is the coldest in Waterbury?

January is Waterbury's coldest month, registering average high temperatures of 33.3°F and lows of 21.4°F.

How cold is it in Waterbury in January?

During January, Waterbury experiences an average high-temperature of 33.3°F and a low-temperature of 21.4°F.

What is the average humidity in January in Waterbury?

In Waterbury, Connecticut, the average relative humidity in January is 77%.

How many days does it rain in January in Waterbury?

In Waterbury, in January, during 7.3 rainfall days, 2.36" of precipitation is typically accumulated.

How many days does it snow in January in Waterbury?

In Waterbury, Connecticut, during January, snow falls for 7.7 days and regularly aggregates up to 4.13" of snow.

How many hours of daylight does Waterbury have in January?

In January, the average day length in Waterbury is 9h and 35min.

What time are sunrise and sunset in January in Waterbury?

On the first day of January in Waterbury, sunrise is at 7:18 am and sunset at 4:32 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 5:06 pm EST.

How many hours of sunshine does Waterbury have in January?

In January, the average sunshine duration is 4.9h.

When is the lowest UV index in Waterbury?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index intensity in January in Waterbury?

In January, the average daily maximum UV index in Waterbury is 2. A UV Index of 2, and less, symbolizes a low health threat from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Waterbury, CT

Average temperature in January - Waterbury, CT
  • Average high temperature in January: 33.3°F

The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (33.3°F).

  • Average low temperature in January: 21.4°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (21.4°F).

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Average pressure in January
Waterbury, CT

Average pressure in January - Waterbury, CT
  • Average pressure in January: 30.04"Hg

The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in January
Waterbury, CT

Average wind speed in January - Waterbury, CT
  • Average wind speed in January: 8.3mph

The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).

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Average humidity in January
Waterbury, CT

Average humidity in January - Waterbury, CT
  • Average humidity in January: 77%

The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is April (72%).

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Average rainfall in January
Waterbury, CT

Average rainfall in January - Waterbury, CT
  • Average rainfall in January: 2.36"

The wettest month (with the highest rainfall) is December (3.78").
The driest month (with the least rainfall) is September (2.13").

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Average rainfall days in January
Waterbury, CT

Average rainfall days in January - Waterbury, CT
  • Average rainfall days in January: 7.3 days

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (7.3 days).

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Average snowfall in January
Waterbury, CT

Average snowfall in January - Waterbury, CT
  • Average snowfall in January: 4.13"

The month with the highest snowfall is February (5.39").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in January
Waterbury, CT

Average snowfall days in January - Waterbury, CT
  • Average snowfall days in January: 7.7 days

The month with the highest number of snowfall days is February (9.2 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in January /
Average sunshine in January
Waterbury, CT

Average daylight in January / Average sunshine in January - Waterbury, CT
  • Average daylight in January: 9h and 4min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in January: 4h and 5min

The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

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Average sunshine days in January
Waterbury, CT

Average sunshine days in January - Waterbury, CT
  • Average sunshine days in January: 18.1 days

The month with the most sunshine days is January (18.1 days).
The month with the least sunshine days is June (11.1 days).

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Average UV index in January
Waterbury, CT

Average UV index in January - Waterbury, CT
  • Average UV index in January: 2

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average cloud cover in January
Waterbury, CT

Average cloud cover in January - Waterbury, CT
  • Average cloud cover in January: 47

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 35).

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Average visibility in January
Waterbury, CT

Average visibility in January - Waterbury, CT
  • Average visibility in January: 6mi

The months with the highest visibility are January, March, April, October, November and December (6mi).
The months with the lowest visibility are February, May, June, July, August and September (5mi).

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Waterbury, Connecticut, USA

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